#  Author:
#  Date:
########### The problems come in pairs  ###########
############### Problem 1 #########################
#########  B- level for two ##################
def snip_char(s, ch):
    """prec: s is a string, ch is a character
    if the string does not contain the character the entire string
    is returned
    if it does, that character and everything after it is amputated
    and the remainder  is returned.
    examples:  snip_char("cowpie", "i") -> "cowp"
    snip_char("Moosement, "M") -> ""
    snip_char("Heffalump, "z") -> Heffalump"""
    return ""
############### Problem 2 #########################
#########  B- level for two ##################
def double_speak(s):
    """prec: s is a string
    postc: returns s with its characters doubled.
    examples:
    double_speak("cat") -> "ccaatt"
    double_speak("") -> ""
    """
    return ""
############### Problem 3 #########################
##########  B level for 1, A-/B_ for two###########
def eval_dict(d):
    """prec:  d is a dictionary whose keys are numbers and whose
    values are nonnegative integers.
    postc:  returns the product of the keys raised to their values'
    powers.  
    examples:
    eval_dict({4:2, 5:3, 3:2}) -> 4**2 * 5**3 * 3**2 = 16*125*9 = 18000.
    return 1 if the dictionary is empty.
    """
    return 1
############### Problem 4 #########################
##########  B level for 1, A-/B_ for two###########
def file_in_place(x, new_item):
    """prec:  x is a homogeneous list of sortable items that is sorted.
    (Note: x could be empty)
    postc:  new_item is an object of the list's item type.
    the new items is inserted into the list so the list is still sorted.
    NB: the list is altered in-place. You do not return a copy.
    example:
    x = [2,4,6,8]
    new_item = 7
    file_in_place(x, new_item) changes x  to
    [2,4,6,7,8]
    x = []
    new_item = "cows"
    file_in_place(x, new_item) changes x  to
    ["cows"]
    """
    pass
############### Problem 5 #########################
##########  A level for 1, A+ for two   ###########
def flatten(x):
    """prec: x is a list
    postc: returns a new list which has been "flatted" by removing and extending
    all nexted lists.  
    examples:
    flatten([1, 2, 3]) -> [1, 2, 3]
    flatten([[1,2], [3, [4, 5], 6], 7, 8]) -> [1, 2, 3, 4, 5, 6, 7, 8]
    """
    return []
############### Problem 6 #########################
##########  A level for 1, A+ for two   ###########
def push_me_pull_you(file_name, ch):
    """prec:  file_name is the name of an existing file
    ch is a character.
    postc:  prints all lines containing a word that begins and ends
    with the character ch.   My test file will have no punctuation
    mark.  This is case-sensitive"""
    pass

print("****************** Test Problem 1 *******************")
print("****************** Test Problem 2 *******************")
print("****************** Test Problem 3 *******************")
print("****************** Test Problem 4 *******************")
print("****************** Test Problem 5 *******************")
print("****************** Test Problem 6 *******************")